LeadFarmer

Well-Known Member

• Jan 15, 2014

• #1

The battery on my Def 110 is reading 12.7v, anyone know if that means it's fully charged or not? Shouldn't a fully charged battery read 13v?

 

Dougden

Active Member

• Jan 15, 2014

• #2

Mine read 11.7v when it was knackered and it had to be replaced. Green Flag call out man reckoned 12.66v was fully charged, so I would say at 12.7v its fully charged.

 

easye1

Banned

• Jan 15, 2014

• #3

I take it thats an as is charge - without any drain or charge going either way.
whats your running charge without load in the system,
should be another half a volt at least...

 

LeadFarmer

Well-Known Member

• Jan 15, 2014

• #4

easye1 said:

I take it thats an as is charge - without any drain or charge going either way.

Click to expand...

Correct

easye1 said:

whats your running charge without load in the system,
should be another half a volt at least...

Click to expand...

I'll nip out and have a look..

 

oldskool

Well-Known Member

• Jan 15, 2014

• #5

A good fully charged battery should read 13.2v 2.2v per cell.

 

ratty

I'm not special I'm limited edition

• Jan 15, 2014

• #6

oldskool said:

A good fully charged battery should read 13.2v 2.2v per cell.

Click to expand...

Very few batteries will show 13.2 volts when settled.

12.6 to 12.7 is about the norm to be fair.

 

easye1

Banned

• Jan 15, 2014

• #7

ratty said:

Very few batteries will show 13.2 volts when settled.

12.6 to 12.7 is about the norm to be fair.

Click to expand...

but as I never used a more modern battery as fitted to cars such as moondaos with better then lead acid batteries, then they may show a high at rest voltage eh

 

LeadFarmer

Well-Known Member

• Jan 15, 2014

• #8

easye1 said:

I take it thats an as is charge - without any drain or charge going either way.

Click to expand...

Correct

easye1 said:

whats your running charge without load in the system,
should be another half a volt at least...

Click to expand...

With engine running at idle whilst stationary its 14.1v, thats without any load such as lights etc.

So 12.7v when parked on driveway, and 14.1v with engine running.

 

mlucas110

New Member

• Jan 15, 2014

• #9

That's normal. Fitted 4 alternators this week to a few vehicles all read 14.2 running and about 12.6-7 when off.

 

LeadFarmer

Well-Known Member

• Jan 15, 2014

• #10

mlucas110 said:

That's normal. Fitted 4 alternators this week to a few vehicles all read 14.2 running and about 12.6-7 when off.

Click to expand...

Thanks, nice to know its ok then

Great photo by the way